Huawei MG323 manual Circuit Recommended for the SIM Card Interface, Ground signal of the SIM card

Page 26

HUAWEI MG323 GSM M2M Module
Hardware Guide				Description of the Application Interfaces

	Pin No.	Signal Name	I/O	Description

	11	GND	-	Ground signal of the SIM card

3.7.2Circuit Recommended for the SIM Card Interface

As the MG323 module is not equipped with a SIM card socket, you need to place a SIM card socket on the user interface board. The SIM card signals are transmitted outwards through the 50-pin B2B connector interface. Figure 3-11shows the circuit of the SIM card interface.

Figure 3-11Circuit of the SIM card interface

ESD protection

HUAWEI Module (Modem)

VSIM

SIM_RST

SIM_CLK

SIM_DATA

GND

SIM Card

Socket

33 pF 33 pF

0.1µF 33 pF

	Issue 06 (2013-06-13)	Huawei Proprietary and Confidential	26
		Copyright © Huawei Technologies Co., Ltd.

Image 26

Contents Issue Date Hardware GuideNo Warranty Version Date Chapter Descriptions About This DocumentHistory CreationVersion Date Chapter Descriptions Specifications of the antenna interface Updated .8 Audio InterfaceUpdated -3 Recommended Contents Electrical and Reliability Features Introduction OverviewAbout This Chapter Feature DescriptionOverall Description Function OverviewSMS DRX=2DRX=5 DRX=9 Gprs Gprs ClassApplication Block Diagram Circuit Block Diagram2Circuit block diagram of the MG323 module B2B Connector Interface Description of the Application InterfacesPin Pin Name Description DC Characteristics Normal Min Tpy MaxUART1DCD ResetTermon LedstatusVIO Power InterfaceOverview VbatGND Vcoin Pin No Signal Name DescriptionVbat Interface DCEVIO Interface Power-On and Power-Off Time SequenceVcoin Interface Pin for resetting the hardware Power-On Time SequencePin for controlling power-on and power-off Reset Signal Control InterfacePower-Off Time Sequence Input Signal Control Pins Pin for network status LEDWorking or Network Status Output Signal Control PinApplication Device Pin No Signal Name Description Feature Direction Uart InterfaceDCE data DTE is ready DTE to DCE Terminal ready Circuit Recommended for the Uart InterfaceDCE receive DTE transmits DTE to DCE Data Serial data DCE data set DCE is ready DCE to DTE ReadyData signal of the SIM card Clock signal of the SIM cardPower supply of the SIM card Reset signal of the SIM cardGround signal of the SIM card Circuit Recommended for the SIM Card Interface12External circuit for 32 Ω handsets/16 Ω headsets Audio Interface13External circuit for the microphone interface Antenna Installation Antenna InterfaceCoaxial Cable and RF Connector Environmental Type Material ConditionHuawei MG323 GSM M2M Module Hardware Guide Antenna Interface ESD Protection for the Antenna Interface RF Specifications of the Antenna InterfaceSpecification Minimum Typical Maximum Unit Value Uplink frequency range GSM 824 849 MHzSpecification Minimum Typical Maximum Unit Value Specifications of the Antenna Interface Polarization Linear polarization Pattern OmnidirectionalExternal power voltage Electrical and Reliability FeaturesSymbol Specification Minimum Value Maximum Value Unit Extreme Working ConditionsPin No Signal Name Operating and Storage Temperatures and HumiditySpecification Minimum Value Maximum Value Unit Electrical Criteria of Application InterfacesVoltage great drop. The Vbat power voltage Function Signal Name Waveform Remarks LevelPower supply Than 3.3VBAT=0 Pins 41, 43, 45, 47, and 49 are power GND ExternalPower pin LedstatuUART1DSR UART1RTS UART1DTR UART1CTS UART1DCD UART1 UART1RDUART1RIN Working Current Power Supply FeaturesInput Power Supply Parameter Minimum Value Typical Value Maximum Value UnitBand Typical Unit Working Mode Typical value Unit RemarkConfiguration Up/1 Down 123 Reliability FeaturesConfiguration Value Test Condition StandardTest Condition Standard EN61000-4-2 ±4 kV ±8 kV ESD FeaturesESD Test Standard Contact Discharge Air Discharge Dimensions L x W x H 35 mm x 32.5 mm x 3.05 mm Mechanical SpecificationsDimensions Dimensions of the B2B Connector 1Dimensions of the MG323 module unit mmModel Stacking HRS Number Height mm MG323 Module Installation Description 5Structure fixing hole6MG323 module installation Specification Selection for Fasteners 7Machine screw dimensions8Nut dimensions Appendix a Circuits of Typical Interfaces 1Circuits of typical interfaces in the MG323 moduleAppendix B Acronyms and Abbreviations Acronym or Abbreviation ExpansionPDU PbcchPCB RTC

Related manuals

Manual 239 pages 48.54 Kb